I went round and round with my insurance. I was prescribed about 200u a day and that works out to 5+ vials a month. They would only pay for 3 per month. Thats why I was switched to the WalMart version of Relion N. Thanks guys. To the OP if you need a vial I'll go to WalMart and buy you one. PM me. I have plenty of the Humalog (short fast acting)